<http://schema.org/alternativeHeadline>
"<p>Nigeria&amp;rsquo;s anti-corruption agency has summoned top executives of energy multinationals Shell and Halliburton for questioning in two separate graft probes. Another 21 people are also being questioned, officials say.</p>\n"^^<http://www.w3.org/2001/XMLSchema#string>
<http://en.rfi.fr/africa/20101130-nigeria-graft-investigators-question-shell-halliburton-executives>